Combine multiple geometry parts into a single part and to ensure mesh connectivity once the geometry is meshed.

Note: Geometry parts that touch, but not unioned, are not physically connected in the simulation model (except for FDTD where unioning is not required.)
Unconnected geometry results in invalid meshes (overlapping or misaligned) that generate errors during the Feko solution. Unioning geometry ensures that faces occupying the same space are merged into a single face where solution settings can be applied.

When the union of geometry parts fail, first use the Simplify (repair operation) tool on the primitive parts before attempting the union again.

Note: Where the unioning of imported faces look like they form closed regions, but do not result in new regions, rather use the stitch tool.